# Stacked highlight (Highlight & filter example)

> WestCoast Charts 1.1.5, release, public Core release, on npm. HTML: https://westcoast-charts.com/gallery/highlight-filter/stacked-highlight/ · Index for agents: https://westcoast-charts.com/llms.txt

Legend hover highlights one stack layer.

- Chart type: `bar` (Bar)
- Collection: Highlight & filter · Highlight filter
- Raw configuration: https://westcoast-charts.com/gallery-src/highlight-filter/stacked-highlight.js
- Standalone example: https://westcoast-charts.com/embed/samples/wcc/gallery/highlight-filter/stacked-highlight.html

## Setup

```js
import WestCoastCharts from 'west-coast-charts'
```

## Options

```js
const options = {
  chart: {
    height: 380,
    fontFamily: "Inter, Geist, \"IBM Plex Sans\", system-ui, sans-serif",
    type: "bar",
    stacked: true,
    toolbar: {
      show: false
    }
  },
  series: [
    {
      name: "Hardware",
      data: [23, 30, 36, 40, 40, 17, 14, 40]
    },
    {
      name: "Software",
      data: [40, 27, 19, 12, 14, 36, 12, 11]
    },
    {
      name: "Services",
      data: [17, 33, 10, 12, 25, 35, 12, 32]
    }
  ],
  xaxis: {
    categories: ["Q1 25", "Q2 25", "Q3 25", "Q4 25", "Q1 26", "Q2 26", "Q3 26", "Q4 26"]
  },
  legend: {
    onItemHover: {
      highlightDataSeries: true
    }
  },
  title: {
    text: "Revenue by segment (hover the legend)"
  },
  theme: {
    mode: "light",
    preset: "coastal"
  }
}

const chart = new WestCoastCharts(document.querySelector('#chart'), options)
await chart.render()
```

## Verify

- Text check (Library 1.1.5): load `west-coast-charts/agent/describe` and call `chart.describe({ format: "json" })` for the actual drawn state. The live reader is on this example’s HTML page.
- Command line (Public agent tools 0.2.3, tested with Library 1.1.5; available from the versioned GitHub release and npm, https://westcoast-charts.com/docs/cli/index.md): `wcc chart export highlight-filter-stacked-highlight.json --out highlight-filter-stacked-highlight.svg --with-table` (save the options above as JSON first)